If you want to look up some mnemonics, be sure to also check "Chapter 6: Extended mnemonics" if you don't find your mnemonic.

The file is big.

We now have about 8k lines assembler code. Where to start?

The only "plaintext" part of the listing are the system calls.

10002fec: 48 01 a2 59 bl 1001d244 <wait3@plt>

Objdump nicely annotated them for us. Hey, thanks :)

Parameter passing.

From strings, we know that "/usr/bin/unzip" is being called, that is usually done by using the system(3) system call.
Lets check for that. ls_servd uses a lot of system(3) calls, this is the first one:

Yay, an sprintf(3) followoed by an system(). The system call parameters are numbered from r3 upwards, so the third parameter to the sprintf is r5, which is copied from r3 a few lines above. It looks like r3 might be the return value of the omnious subroutine at 0x10008db8.